Watertight door



y 1948. w. G. WILSON 2, 0,7 4

WATERTIGHT DOOR Filed April 6, 1944 2 Sheets-Sheet 1 A F -lu May 4, 1948. w. 6. WILSON 2,440,764

WATERTIGHT DOOR Filed April 6, 1944 2 Sheets-Sheet 2 25 5 30 67 /3 /a 27 311mm 3 M a 12 3/ M J? Patented May 4, 1948 UNITED YiSIA'TIES PATENT OLFFICE 1 2,440,764 WATERTIGHT noon -WilliamG. Wilson, Stratford, Conn.

Application April 6, 1944," Serial No.. 529,852

- 7'Claims.

This invention relates to water-tight doors, particularly bulkhead doors of the I so-called Dutch type which aremade in: two sections, and it is a particular object of the invention to provide animproved simple construction whereby the door isabsolutelywater-tight entirely aroundthe outer; periphery and at' the joint through the center-of the door between the two sections.

With the foregoing and other objects in view I have devised theconstructionillustrated in the accompanying drawings forming a part of this specification. It'is,- however, to be understood the invention is not limited to the specific construction and arrangement shown but may embody various changes and modifications within the scope :of the invention.

Inthese drawings: i

Fig. l isa front-elevation-of the-door mounted on a' bulkhead and in closed position Fig. 2-is a side-elevation thereoflookingfrom the right of Fig. l but with the bulkhead wall omitted the section at -the lower part being substantially on the line A-'-A of Fig. 1;

Fig. 3 is asection substantiallyonline 3-3 of Fig. 1on an enlarged scale.

Fig. 4 is a detail of one side of the jeint' between the two sections of the doorlo'oking' from the front and-on a larger scale thanFig. 1 and with the extension on the'lower edgeof theupper door section oniittedbut outlined in broken lines;

Fig. 5 is-a section substantially on line AA of Fig. 4;

Fig. 6 is a vertical sectiononan enlarged scale through the joint-between the two-door sections,

substantially on line 6-6 of 1-,- and 2 the lower or panel section is kept closed and looked, as for examplewhere thedoor-is used as a door to the galley through which food may be served from the galley. The-lower section or panel I4 comprises a front wall 16 with its outer peripheral edge bent backwardly to form a rearwardly extending flange I1, and a flat bar it is welded at its edge 19 to the" inner face of the wall 16 and spaced asuitable distance from the flange IT to form a-groove -to receive and hold a continuous square strip a gasket 20, preferably of rubber or similar material. The bar l8 is preferably inclined somewhat toward thefiange ll so that the resulting groove will be somewhat narrower at its outer or-ppen sideto retain the gasket 20 in the groove. V

The upper door section 15 is-ot similar construction comprising a front wall '2 I with a backwardly extending peripheral flange 22 the same as the flange l l, and on the inner side of the wall M is welded a barn the same as the bar 18 spaced from the flange 22 to form-a groove fora continuous gasket strip' 24aaround the vertical sides and top edge of the upper door section. When the door sections are closed the edge of the outwardly extending flange l3 of the door frame engages the surface -of the strip gaskets 2i] and 24 making a water-tight joint-, and they are preferably so arranged that when thedoor is secured the edge of this flange l3will beforce'd somewhat into the asket to compress it sufliciently to insure a water-tight joint. The 'door sections are drawn closed and this tight contact between the two sections,- the lower or-panel section I l-and flange and the gasketsis secured by locking dogs 25,- there being preferably three of these-on each door section. Each of these locking dogs comprises a handle 26 on theoutside of the door secured to a pin 2'! mounted in abearing 28 in the door with a. bushing 29 havinga packing 3fl -to prevent leakage. Carried on the inner end of the pin 2'! is a locking dog 3i adapted to ride up on a tapered wedge-32 welded to the inner wall of the frame It, and the wedge is provided with a stop 33 to limit turning movements ofthe dog so that it would be impossible to turn the dog too far, so as to pass on the wedge. In view of this tapered wedge, turning the dog onto this wedge to locking position will draw the door tightly closed and press the gasket tightly against the edge of the-flange l3 to'insure awater-tight-ioint.

The dog 3| has a second handle 34 so that the door may be locked or unlocked from the inside. Welded on the frame l4 are stop lugs 35 to be engaged by the edge flange ll of the lower panel section to prevent the flange is being forced too deeply into the gasket. A guide 64 is weldedto the frame below the lower half of the door to bring this door section into alignment when closed. The guide is tapered or inclined on the top side to guide the door to proper position. When the dogs are unlocked or swung to the unlocked position to carry the dogs away from the tapered wedge, the handle 26 rides up onto a small tapered wedge 31 welded to the outside of the door so as to hold the handles and dogs inthe released position to prevent their swinging into position to interfere with the closing of the door.

As the door is made in two sections it is necessary to provide a water-tight joint across the center of the door between these two sections.

To secure this result there is in effect acontinuous gasket in the lower panel or section throu out the entire periphery thereof. The gasket 20 extends along the two opposite vertical edges and the lower edge, but to continue this gasket across the upper edge a'sort of box is welded to the upper edge of this lower section on the inner side thereof. This as shown in Fig. 6 comprises an angle shaped member 38 welded to the inner side of the door wall l6, as shown at 39, the top surface of the lower flange 38 being substantially on a line with the top edge 46 of the lower door section; At the top edge of the vertical flange 4| is welded a plate 42. forming with the angle member 36 a transverse groove across the upper edge of the lower door section facing outwardly and exposed or open at the outer side in which is mounted the continuous gasket 43. However, the opposed lower edge of the upper section and top edge of the lower sections of the door are not formed straight across the full length of the door but adjacent the opposite'edges are inclined upwardly and outwardly. The top edge 4|] is so inclined as indicated at 44, Fig. 4, and then extends outwardly in a horizontal direction as indicated at 45. The lower edge 46 of the upper door section is similarly shaped at 41 and 48. The two edges are preferably spaced a short distance to insure that they will not interfere with the closing of the upper door section. The rubber gasket 26 is continued upwardly above the top edge 40 of the lower door section, as indicated in Fig. 4, and the opposite ends of the horizontal gasket 43 abut against the side of this upper end portion of the gasket 26 to form a joint 49, and this joint may be sealed with a suitable rubber cement. The same kind of a joint is formed on the opposite side of the door section at the other end of the horizontal gasket 43. The rubber strip or gasket 43 is inserted from the front face side of the lower door or panel and joined with the gasket strips 26 at the sides of this panel. This makes a continuous gasket throughout the entire periphery of the lower door section. The top ends of the gasket 20 are inclined upwardly and rearward-1y, as indicated at 50 in Fig. 5, and the lower end of the asket 24 in the upper door sectionis similarly inclined, so that when the upper door section is swung to the closed position the lower inclined end of the gasket 24 will engage the upperinclined end of the lower gasket 20 with a sort of wedging action, making a water-tight joint. q

Welded to the lower edge portion of the upper door section is an extension 5|. This is a plate with its ends 52 bent backwardly to lie over the outer sides of the flanges l1 and 22 of the two door sections. This plate 5| is welded to the upper door section on the outer surface thereof and extends downwardly below the lower edge 46 of the section so as to overlap the upper portion of the lower door section [4, as shown in Figs. 1 and 6. Therefore when the upper door section is closed it covers up the joint between the edges 40 and 46 of the two door sections.

On the inner side of the front wall 2| of the upper door section [5 is welded a small bead or rib 53 extending entirely across the door in alignment with the transverse gasket 43 so that when the upper door section is closed it will engage the exposed outer side of the gasket 43 and will be compressed somewhat into it as the upper door sectionis locked to make a water-tight joint, and to further insure the joint between the door sections is absolutely water-tight this bead is inclined upwardly and. outwardly, as shown at 54 in Fig. 4, so as to cross over the joint 49 between the gaskets 43 and 20 and also over the joint 55 between the upper end of the gasket 26 and the lower end of the gasket 24. This insures absolute sealing of the jointbetween the two door sections, so that there is no chance of leakage of" water through the joint. 7 j 7 It is necessary at times to open the door as a unit, that is to open the two sections as a unit. For this purpose a pad 56 is welded to the inside of the wall 2| of the top-section of the door and a socket 51 is welded ,to the inside of the lower door section. The pad 56 is provided with an opening 58 in alignment with this socket to receive a pin 59 so as to lock the two door sections together so that the door can be opened as a unit. When the top half of the door only is to be opened this pin may be removed and the top half opened by releasing the dogs 25 carried by this section. A drop shelf 60 may be hinged to the plate 42 at 6| and held in the upper or horizontal position by a hinging bracket 62 on a hinge pin 63 secured to the lower door'section. A glass covered port 65 maybe provided in" the upper door section. The two door sectionspare mounted to swing on hinges 66 comprising spaced lugs 61 welded to the frame II and-a center lug 68 welded to the door section with a hinge pin 69 connecting-them. There may also be a handle 16 welded to the upper section.

It will be seen from the above that although the door is made in two sections it may be opened and closed as a unit. Also that if desired, the upper door section may be opened independently of the lower section while the lower section is kept closed and locked. However, with this construction a water-tight seal or joint is provided'entirely around the periphery of the door and also at the horizontal joint or separation between the two door sections, efiectively preventing any leakage of water through the door.

Having thus set forth the nature of my invention,Iclaim:

1. A door of the character described comprising two sections each comprising a plate with a rearwardly extending flange at its side and end edges, a flat bar welded to the plate inwardly of the flange and providing therewith a groove open toward the rear, a strip gasket of yieldalble material in said groove, an open frame provided with an outwardly extending flange inalignment with said groove with its edge adapted to press against the gasket to make a tight joint, means for hinging the sections:toitheaframegmeans for securing-the sections in closedsposition with the askets pressed against theilframe flangahaibox structure .at the edge, of one .section atiithefdivision. betweenthese'dtions forming a transverse groove opening "outwardly, a yieldable gasket in said groove extending :the' full width of the door andengaging the first gaskettat its oppositeends to form. a-. tight joint with it,..and a transverse head 1 cm .the inner sid'eT of-f the other. section adapted to press against said latter gasket to make a tight joint between the sections when the door is closed.

2. A door of the character described comprising an open frame provided with an outwardly extending flange around the periphery of the opening therein, upper and lower door sections pivoted to the frame each comprising a plate provided with spaced rearwardly extending flanges at its side and end edges forming a rearwardly facing groove in alignment with the frame flange, a sealing gasket in the groove adapted to press against the frame flange to form a tight joint, said lower door section being provided with spaced transverse members forming :a forwardly facing groove transversely of the section at the top edge thereof, a sealing gasket in said latter groove extending the full width of the door and engaging the first gasket at its opposite ends to form a tight joint with it, a transverse bead adjacent the lower edge of the upper section in alignment with said latter gasket and adapted to press against it to form a tight joint, and means for securing the sections in closed position with the first gaskets pressed against the frame flange.

3. A door of the character described comprising an open frame provided with an outwardly extending flange around the periphery of the opening therein, a door comprising upper and lower sections hinged to the frame and each comprising a plate provided with a rearwardly facing groove along its side and end edge in alignment with said flange, a sealing gasket in each of said grooves adapted to seat against the flange to make a tight joint and with the ends of the upright side gaskets in the two sections in contact to make in efiect a continuous asket about the periphery of the door, said lower section being provided with an outwardly facing groove at the top edge thereof extending transversely of the door and communicating with the grooves at the sides of this section, a sealing gasket in the transverse groove contacting the gaskets in the side grooves at its opposite ends to form a continuation thereof, a transverse bead adjacent the lower edge of the upper section adapted to engage the transverse gasket to form a seal therewith and extending over the joints between the transverse and side gaskets, and means for securing the sections in closed position with the first gaskets against the frame flange.

4. A door of the character described comprising an open frame provided with an outwardly extending flange around the periphery of the opening therein, a door comprising upper and lower sections hinged to the frame and each comprising a plate provided with a rearwardly facing groove along its side and end edge in alignment with said flange, a sealin gasket in each of said grooves adapted to seat against the flange to make a tight joint, the ends of the gaskets at the dividing line between the two sections being exposed and in contact when the sections are closed to form a continuous gasket 1 about the periphery of lthe door, a transverse gasket at the top edge of the-I lower "section in contact at its opposite ends .with 'the first gasket -inthat-section to form -a continuation thereof, nmeans at the" i lower edge of the upper section "forming a tightjoint with the transverse-gasket,

38.11 open frame provided withlan outwardly-sextending flange around the periphery oftheppening therein, a door comprising upper and lower sections independently hinged to the frame, said sections provided with means at their outer periphery mounting a sealing gasket around the periphery of the door and with the ends of the side gaskets at the division between the sections in contact to form a continuous gasket, said gasket being in alignment with the flange: and adapted to seat against it to form a seal, a transverse gasket across the door on one section adjacent the division line between the sections and in contact at its ends with the gaskets at the opposite edges of that section to form in eifect a continuous gasket therewith, means on the other section seating against the transverse gasket to form a tigh iioint between the sections, and means for securing the sections in closed position with the first gasket against the frame flange.

6. A door of the character described comprising an open frame provided with an outwardly extending flange around the periphery of the opening therein, a door comprising upper and lower sections independently hinged to the frame, said lower section being provided with a continuous groove at its upright side and bottom edges facing rearwardly and a transverse groove across its upper edge facing forwardly, and communicating at its opposite end with the first groove, gasket material filling said grooves throughout their entire length, the upper section being provided With a rearwardly facing groove along its upright side and top edges, a continuous gasket in said latter groove arranged with its free lower ends adapted to engage the upper ends of the side gaskets in the lower section to form a continuous gasket about the periphery of the door when the sections are closed, transversely extending means adjacent the lower edge of the upper section adapted to engage the transverse gasket to form a tight joint between the sections, and means for securing the sections in closed position with the gaskets about the periphery of the door against the frame flange.

'7. A door of the character described comprising an open frame provided with an outwardly extending flange around the periphery of the opening therein, a door comprising upper and lower sections independently hinged to the frame, said sections provided with means at their outer periphery mounting a sealing gasket around the periphery of the door and with the ends of the side askets at the division between the sections in contact to form in effect a continuous gasket, said gasket being in alignment with the flange and adapted to seat against it to form a seal, a transverse gasket across the top edge of the lower section facing outwardly and in engagement at its opposite ends with the side edge gaskets of this section, a bead adjacent the lower edge of the upper section adapted to engage the transverse gasket and extend onto the side gaskets to form a seal between the two sections when the sections are closed, means locking the twosections together to swing as a unit and adapted to be released to permit the upper section to be swung to the open position while the lower section remains closed, and means for securing the sections in closed position with the gaskets about 5 the periphery of the door against the frame flange.

- WILLIAM G. WILSON.

REFERENCES CITED The following references are of record in the file of this patent:

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